Pump.



A. F. ROGKWELL.

PUMP.

APPLIUATION mm) FEB.5,1906.

962,25 1 Patented June 21, 1910.

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A. F. ROCKWELL;

PUMP.

APPLICATION FILED FEB. 5, 1906.

Patented June 21, 1910.

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WITNESSES.-

ATTORNEY ANDREW u. uRAqAr-I co PHOTO-LITHCGRAPKEFS WASmNGTUI. 1;,(2.

ENTTED @TATEg PATENT @FFTQE.

ALBERT F. ROCKWELL, OF BRISTOL, CONNECTICUT, ASSIGNOR TO THE NEW DEPARTURE lVIANUFACTURINGr COMPANY, OF BRISTOL, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

PUMP.

Application filed February 5, 1906.

T 0 all whom it may concern:

Be it known that I, ALBERT F. ROCKWELL, a citizen of the United States, residing at Bristol, county of Hartford, State of Connecticut, have invented a certain new and useful Pump, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to pumps.

One object is to provide a simple and efficient structure by means of which a reciprocatory piston can be caused to produce a continuous discharge of fluid from the pump.

Other objects and advantages as well as the novel details of construction of this invention will be specifically referred to hereinafter, it being understood that changes in form proportion and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

In the drawings: Figure 1 is a view showing the pump partly in section, and as connected to the cylinders of an explosion motor; Fig. 2 is a cross sectional view on the line w-w of Fig. 1; Fig. 3 is a sectional view on the line g y of Fig. 1; Fig. 4 is an end view of the valve; Fig. 5 is an end view of one of the piston rings for actuating the valve; Fig. 6 is a fragmentary detail view of one of the rings and one of the trips coiiperating therewith.

In the present embodiment of my invention, the pump comprises the cylinder or casing 7 having an inlet, here shown as the pipe 6, and an outlet, here shown as the pipe 8. lVithin said casing 7 is a partition 15 rigidly connected to the inner wall of the casing 7 and spaced therefrom to provide the semicircular chambers 16 and 17, said semicircular chambers being separated by the elongated ribs 18 and 19, preferably integral with the cylinder 7 and connected to the circular partition 15 by suitable fastening devices.

The respective ends of the partition 15 are provided with openings or perforations designated by the reference numeral 20, and within the circular partition 15 is a rocking c lindrical valve shell 21 having perforations 22 at one end and similar perforations Specification of Letters Patent.

Patented June 21, 1910.

Serial No. 299,612.

23 at the opposite end. The perforations 22 in the valve shell are adapted to register with those on the intake side of the partition 15 when the perforations 23 register with the perforations 20 at the opposite or discharge end of the pump, and vice versa. That is to say when the stroke of the pump piston 24L is pulling air into the chamber 25 through the openings 20 and 22, it will be discharging air from the chamber 26 through the openings 23 into the conduit 8. When the piston is discharging air from the chamber 25 the ports 20 and 22 on the intake side of the chamber 25 will be closed, and those on the opposite side will register. The ports 23 at this time will be out of register with the ports 20 in the chamber 26 on the discharge side of the chamber, but will register with the ports on the intake side. This alternate registration of the ports on the intake and outlet sides of the cylinder will be effected, in view of the fact that the valve, as heretofore stated, has a rocking movement. This rocking movement may be accomplished in a number of ways, but a simple form of doing it, is to provide rings 27 on the respective ends of the piston 24, which rings will be provided with notches 28, having inclined edges or faces 29 adapted to contact and ride upon the inclined faces 30 of the trips 31, which are rigidly connected to the inner wall of the rocking valve. The trips at the respective ends of the valve, as well as the inclined faces of the rings are oppositely inclined, so that an alternately shifting movement will be effected to cause, first the intake ports in one of the chambers 25 or 26 to open, while the discharge ports in that particular chamber will be closed, and the discharge ports in the other chamber will be open, while the intake ports in that particular chamber will be closed. In other words, the present pump constantly discharges air from one portion of the cylinler while pulling it in from the opposite s1 e.

The piston rod 34 can receive its power from any suitable source.

While the present pump in in no wise limited to such application, I herein illustrate it as connected with the explosion cylinders 1, 2 of an explosive engine, the inlet pipe 6 being shown as leading from the discharge ports 5, 5- of open ended jackets 3, 4:, about said cylinders, so that air can be taken in through the open ends 14 of said jackets, and the discharge pipe 8 being shown as leading to ports 9 opening into said explosion cylinders of the engine.

What I claim is:

l. The combination with a pump cylinder, of a partition therein having inlet and outlet ports, and a rocking valve within the pump cylinder and actuated by the pump piston.

2. The combination with a pum cylinder having inlet and outlet ports, of a cylindrical casing within the cylinder and spaced from the inner wall thereof, said casing having inlet and outlet ports, a rocking valve movable within said casing for opening and closing said ports, and means for actuating said valve at about the limit of stroke of the pump piston.

3. The combination with a pump piston and a casing about the same, said casing having a plurality of ports arranged in circular series near its respective ends, a rocking valve adapted to open some of the ports at one end of the cylinder and close those at the opposite end of the cylinder, and means carried by the piston-head for actuating said rocking valve.

4. In a pump, a cylindrical casing having inlet and outlet ports, a cylindrical rocking valve concentric with said casing and controlling said ports, a piston within said cas ing, and operative connection between said piston and said valve for rocking the latter to control said ports.

5. In a pump, a casing having inlet and discharge openings, a piston movable in said casing, a valve plate controlling said openings and movable across the same at an angle to the line of movement of said piston, and means upon said piston and said valve for moving the latter upon movement of the former.

6. In a pump, a casing having inlet and discharge openings, a piston movable in said casing, a valve plate controlling said openings and movable across the same at an angle to the line of movement of said piston, and a cam upon one of said movable parts and adapted to engage the other thereof, whereby movement of said piston serves to shift said valve.

7. In a pump, a cylinder having internal ribs, a casing within said cylinder and engaging said ribs, whereby inlet and dis charge chambers are produced, said casing having ports at each end communicating with both said chambers, a rocking valve within said casing and controlling said ports, a piston within said casing, and operative connection between said piston and said valve for causing movement of the former to operatively rock the latter.

In testimony whereof, I hereunto afliX my signature, in the presence of two witnesses.

ALBERT F. RO OKWELL.

Witnesses:

JOSEPH D. BROWN, CLARA H. VOORHEES. 

